Class ECFieldElement.Fp

java.lang.Object

org.gudy.bouncycastle.math.ec.ECFieldElement

org.gudy.bouncycastle.math.ec.ECFieldElement.Fp

All Implemented Interfaces:

ECConstants

Enclosing class:

ECFieldElement

public static class ECFieldElement.Fp
extends ECFieldElement

Nested Class Summary

Nested classes/interfaces inherited from class ECFieldElement

ECFieldElement.F2m, ECFieldElement.Fp

Field Summary

Fields

Modifier and Type	Field	Description
(package private) BigInteger	q
(package private) BigInteger	x

Fields inherited from interface ECConstants

FOUR, ONE, THREE, TWO, ZERO

Constructor Summary

Constructors

Constructor	Description
Fp(BigInteger q, BigInteger x)

Method Summary

Modifier and Type	Method	Description
ECFieldElement	add(ECFieldElement b)
ECFieldElement	divide(ECFieldElement b)
boolean	equals(Object other)
String	getFieldName()	return the field name for this field.
int	getFieldSize()
BigInteger	getQ()
int	hashCode()
ECFieldElement	invert()
private static BigInteger[]	lucasSequence(BigInteger p, BigInteger P, BigInteger Q, BigInteger k)
ECFieldElement	multiply(ECFieldElement b)
ECFieldElement	negate()
ECFieldElement	sqrt()	return a sqrt root - the routine verifies that the calculation returns the right value - if none exists it returns null.
ECFieldElement	square()
ECFieldElement	subtract(ECFieldElement b)
BigInteger	toBigInteger()

Methods inherited from class ECFieldElement

toString

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

x

BigInteger x

q

BigInteger q

Constructor Details

Fp

public Fp(BigInteger q,
 BigInteger x)

Method Details

toBigInteger

public BigInteger toBigInteger()

Specified by:

toBigInteger in class ECFieldElement

getFieldName

public String getFieldName()

return the field name for this field.

Specified by:

getFieldName in class ECFieldElement

Returns:

the string "Fp".

getFieldSize

public int getFieldSize()

Specified by:

getFieldSize in class ECFieldElement

getQ

public BigInteger getQ()

add

public ECFieldElement add(ECFieldElement b)

Specified by:

add in class ECFieldElement

subtract

public ECFieldElement subtract(ECFieldElement b)

Specified by:

subtract in class ECFieldElement

multiply

public ECFieldElement multiply(ECFieldElement b)

Specified by:

multiply in class ECFieldElement

divide

public ECFieldElement divide(ECFieldElement b)

Specified by:

divide in class ECFieldElement

negate

public ECFieldElement negate()

Specified by:

negate in class ECFieldElement

square

public ECFieldElement square()

Specified by:

square in class ECFieldElement

invert

public ECFieldElement invert()

Specified by:

invert in class ECFieldElement

sqrt

public ECFieldElement sqrt()

return a sqrt root - the routine verifies that the calculation returns the right value - if none exists it returns null.

Specified by:

sqrt in class ECFieldElement

lucasSequence

private static BigInteger[] lucasSequence(BigInteger p,
 BigInteger P,
 BigInteger Q,
 BigInteger k)

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object